The deal with the mayor went smoothly.
The mayor paid a lot for the information that I brought to him, a lot more than the standard price to keep my mouth shut about this dungeon/secret realm. Even if he hadn't paid that much, I am not someone who invites unwanted problems by yapping my mouth around.
In addition to paying for the information about the secret realm/dungeon, he also signed that I completed the mission and cancelled the mission from other places. It means the mission is no longer active and no one can take it anymore.
Since he paid so much, I drew a perfect map for him to find the cave without an issue. I also told him about the markings on the wall and how I accidentally activated the portal.
With that done, I have no business here. Now, it's time for me to return to the academy.
Luckily, this journey wouldn't be as problematic as the journey here. There is a teleportation hub in this city, which significantly reduces travel time.